Cotton-press



' (No Model.)

.13. M. IVENS.

- OOTTONPRESS. ,No. 309,547. PatentedDeo. 23, 1884.

WITNESSES ZJVVENTOR ttorney N. PETERS, PhoImLIlhugmplver, wmm m. 0. c4

llnrrnn States Patent @rrncn.

EDMUND MASTERS IVENS, OF NEW ORLEANS, LOUISIANA.

COTTON-=PRESS.

SFECIFICATION forming part of Letters Patent No. 309,5 dated December 23, 1884".

Application filed June 2, 1884. (No model.)

To all whom it may concern.-

Be it known that I, EDMUND Mns'rnns IVENS, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Cotton-Presses, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention consists in an automatic brake to receive the weight of the seli returning screw of cotton or other presses for which Letters Patent were granted to me April 9, 1878, No. 202,110, and March 18, 1879, No. 213,334; and its object is to prevent the concussion of the sudden stoppage of said screw, which is injurious to the thread of either the screw or nut, or both, and liable to break the bevel-gear, the eye of which constitutes the nut, and for which purpose various devices have been used, but so far with only partial effeet.

In the accompanying drawings, Figure l is a perspective view ot'a press'screw with ratchethead, and my automatic brake or cushion. Fig. 2 is a similar view of the brake-block detached; Fig. 3, the nest or cell to hold said block, and Fig. 4 the spiral spring for supporting the block. I

The same letters on the several figures indicate like parts.

Arepresents an ordinary press-screw, to the head of which is keyed the ratchet B, the lower portion of which is conical. C is a bevel gear-wheel revolvingin a suitable bearing, as described in my patent of September 4, 1883. In the eye of this wheel is a female screw corresponding with the screw A, so that being rotated around the latter by any suitable power in the proper direction it will cause the screw to risein pressing the bale. On the top or back of this bevel-gear are two or more cells, 1), either cast with it or firmly bolted to it, and are arranged radially with their open ends toward the eye of the Wheel, and within each of these cells is fitted a block of wood, E, made sloping on its face or inner end to correspond with the conic portion of the ratchet B. These blocks have a sliding motion within the cells in a radial direction, and are sup ported at their back ends by springs G around the tongue 6. They are also prevented from rising in the cell by a pin or bolt, f, passing horizontally through the holes h in the sides of the cell, and the slot Z in the block E.

The operation then is as follows: The screw having been forced up and the bale packed and bound, the ratchethead B is released from its pawl-connection with the follower to allow the screw to rotate independently, and thus descend by its own weight until the conic portion of the ratchet-head comes between the sloping faces of the blocks E, forcing them outward against their spring-bearings, which form a yielding cushion to check the revolution and stop the farther descent of the screw.

For light screws a wheel with two of these cells and blocks is sutlicient, and for the heaviest ones I use four. Two, three, or four may be used, according to the weight of the screw and the rapidity of its descent.

What I claim as new, and desire to secure V by Letters Patent, is-

An automatic brake for gravitating pressscrews, consisting of two or more spring-borne blocks, E, formed tapering on their inner ends, in combination with the conical head B of the screw A, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

EDMUND MASTERS IVENS. 

